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5/10

DynoPlanner

An AI build advisor for car enthusiasts that predicts how mods like turbo, cam, bore, and intake will change power, torque, and driveability before you spend a dollar.

Target user

Weekend car enthusiasts and garage tinkerers planning engine modifications

Features
  • Conversational mod advisor that explains trade-offs in plain language for non-engineers
  • Visualized predicted dyno curves (kW vs RPM) before and after each mod
  • Side-by-side comparisons: stock vs. turbo vs. supercharger vs. nitrous
  • Compatibility checker that flags bad combinations (e.g., high compression + boost)
Why now

The Combustion Lab simulator and similar open educational tools have primed a hungry enthusiast audience who want hands-on planning, not just textbook curves.

Signals · overall 5/10
Demand
7/10

Strong pull: MotorMia already claims 1M+ builds, 50k+ Google Play downloads at 4.6★, 4.8★ on App Store, plus a 100-pt HN thread on combustion sims shows primed audience.MotorMia — Your Expert Tuning Co-Pilot and Build Advisortunerlab.ai - Plan Smarter Builds for Your Exact Car

Whitespace
4/10

Crowded: MotorMia, TunerLab.ai, ModPro.Ai, TunerHUB.pro, Motorift, Engine-build.com all already offer AI-driven build advice or dyno/sim predictions — MotorMia explicitly does 'projected performance gains based on real-world results'.MotorMia — Your Expert Tuning Co-Pilot and Build AdvisorDyno Simulator (Virtual Dyno) — Estimate HP & Torque Curves | TunerHUB.proModPro.Ai

Monetization
4/10

Weak direct willingness-to-pay: MotorMia markets itself as 'the smartest tool in your toolbox is free' and most competitors are free or freemium; revenue likely depends on thin affiliate margins from parts shops.MotorMia — Your Expert Tuning Co-Pilot and Build AdvisorEngine Horsepower Calculator | HP Estimator | Engine-build.com

Longevity
5/10

ICE modding community remains active and aftermarket is sticky, but regulatory/EV transition compresses the addressable window; AI build advisors can pivot to EV tuning but core ICP shrinks over a decade.MotorMia — Your Expert Tuning Co-Pilot and Build Advisor

Feasibility
6/10

Doable but non-trivial: requires a large corpus of real dyno results per platform, careful cam/VE modeling, and handling of aspirated/forced-induction cases; TunerHUB.pro shows the physics baseline already exists.Dyno Simulator (Virtual Dyno) — Estimate HP & Torque Curves | TunerHUB.proMotorift Engine Simulation

Combustion engine web-based simulator · 100 points · 45 commentsHacker News · 2026-07-11 (14d ago)